Indicating disk for golf club heads



Nov. 24, 1953 E. F. GROSSMAN 60,436

INDICATING DISK FOR GOLF CLUB HEAD Filed June 24, 1950 EUGENE r:GkQS'SMflM INVENTOR.

BY i yad-fwb Patented Nov. 24, 1953 UNITED STATES PATENT OFFICEINDICATING DISK FOR GOLF CLUB HEADS Eugene F. Grossman, Santa Monica,Calif.

Application June 24, 1950, Serial No. 170,180-

3 Claims.

This invention relates to improvements in golf clubs for permitting thelocation of impact between the club and a golf ball, and this inventionalso relates to a golf playing aid or member which can be applied to theface of the golf club for recording the location of impact between theclub and ball.

A main object of the present invention is to provide an improved golfclub which is provided with a member superimposed on the face of theclub for recording the location of impact between the club and a golfball.

Another object of the present invention is to provide a member which canbe applied to the face of the golf club for recording the location ofimpact between the club and ball.

Another object of the present invention is to provide a member as setout above provided with means for removably securing the member to theface of the club.

Another object of the present invention is to provide a member as abovedescribed marked and constructed to enable the location of the impactbetween the club and the ball to be more readily and quickly observed.

Another object of the present invention is to provide a member as abovedescribed, which is provided with means to enable it to be centered onthe face of the golf club.

With the foregoing and other objects in view, which will be mademanifest in the following detailed description and specifically pointedout in the appended claims, reference is had to the accompanying drawingfor an illustrative embodiment of the invention, wherein:

Figure 1 is a three-dimensional view of a golf club embodying theconcepts of the present invention shown in position for striking a golfball;

Fig. 2 is a front view in elevation of the golf club shown in Fig. 1;

Fig. 3 is an enlarged fragmentary sectional view along lines 3-3 of Fig.2, showing the location recording member and its manner of applicationto the face of the club;

Fig. 4 shows a modified form of the location recording member;

Fig. 5 is an enlarged fragmentary section view along lines 55 of Fig. 4;

Fig. 6 is another modified form of the invention shown in threedimensions; and

Fig. 7 is an enlarged fragmentary sectional view along lines l'! of Fig.6.

Referring to the accompanying drawings wherein similar referencecharacters designate similar parts throughout, Figure 1 shows a golfclub generally indicated at IU which happens to be a driver but could aswell be an iron. The golf club In has a face II and on this face thereis removably secured a location recording member l3 in centered relationwith respect to the face H. Member [3 has a central aperture l4 adaptedto be aligned with a centering mark or indentation It on the face of theclub.

The member l3 comprises a laminated structure including a layer 20 ofcolored sheet material and may conveniently take the form of coloredcellophane, this layer 20 having a tacky adhesive 2| on the back thereofto enable the member 13 to be readily secured to the face of the golfclub and yet be readily removed from the face of the golf club withoutcoating the face. The outer side of layer 20 has a thin coating of wax24 provided thereon. When the ball 26 contacts the member I3 a portionof the wax at 28 which may be considered the point of impact, is removedby the ball thereby exposing the colored surface of layer 20. Thisaction clearly locates with reference to the center [4 of the member l3the point of impact of the ball 26 on the face of the club.

The member 13 is preferably marked with radial lines 30 which assist theuser of the club in more definitely locating the point of impact betweenthe ball and the face of the club. The layer 20 of colored materialpreferably comprises three concentric rings of different colors. Forinstance, an outer ring of green 3|, an intermediate ring 32 of blue,and a central ring 33 of red. The wax 24, on the face of layer 20 doesnotcompletely obscure the lines 30 or the concentric rings 3|; 32, and33, the wax giving a sort of translucent but not transparent effect. Itis contemplated, however, that the layer 24 could be of material tocompletely obscure the markings on the member I3 and also completelyobscure the fact that the member 13 was made of concentric differentcolored rings. The only difference would be that the user of the clubwould not be aware of the location of the rings and lines until after hehad struck the ball but this difference would be rather immaterial. Byproviding the concentric different colored rings and the radial lines30, an automatic indication of the degree of accuracy is recorded by themember l3 so that after the member 13 has been struck the user of theclub merely peels off the member l3 and views where the member [3 hasrecorded the point of impact between the club and the ball. In Fig. 3,the user would observe a blue spot on the member l3 and thereforerealize that the ball had not struck the face of the club centrallythereof whereas, if a spot of red was exposed, then the user would beapprised of the fact that the ball had struck the face of the clubsubstantially centrally thereof. It will be appreciated that between theconcentric rings 3|, 32, and 33 and radial lines 30 that information isalso given with regard to hooks and slices thereby enabling the user toimprove his game.

A modified form of the invention is disclosed in Figs. 4 and 5 whereinthere is a laminated member generally indicated at 40 comprising a sheet4| of carbon paper having the marking face 42 facing outwardly and therear surface thereof having tacky adhesive 44 applied thereto to enablethe member 40 to be readily applied to and re moved from the face of agolf club. In this modification of the invention it is contemplated thata sheet of translucent material 45 will be applied to the outer face ofthe carbon sheet 4|. When the ball strikes the member 40 an imprint willbe recorded by the sheet 45. The user will be able to observe thelocation of the imprint with regard to the center of the member 40 andtherefore be ap prised of the accuracy of contact of the golf ball withthe face of the club.

Figs. 5 and 6 show still another modified form of the invention whichcomprises a laminated structure generally indicated by the referencenumeral 50 which includes an intermediate layer 5| of carbon paper orthe like having the marking face 52 facing outwardly and having the rearface thereof coated with a tacky adhesive 54. There is an annular ringof adhesive 56 around the peripheral outer face of sheet 5| to enable anopaque sheet 51 to be temporarily applied thereto. In this form of theinvention it is contemplated that the entire member 50 may be removedfrom the face of the golf club and the outer sheet 51 removed to viewthe imprint made on the member 51 upon contact of the ball therewith,or, the member 50 may be left on the face of the golf club and the sheet51 peeled off and either member 5'! replaced by another member or themarked sheet being merely pressed back into place.

It will be appreciated that the present invention provides a memberwhich records the location of impact between the club and the ball andwhich member is readily applicable to the face of a golf club andreadily removable therefrom. The representations in the drawing havebeen of necessity enlarged for a clearer presentation but it will berealized that the location recording members are very thin and thereforedo not interfere with the usual contact between the golf 4 ball and theface of the club. There will be unavcidably a slight shock-absorbingfeature provided by the location recording member, but this will be veryslight and will not in any way materially interfere with the normaleffective use of a golf club.

Various changes" may be made in the details of construction withoutdeparting from the spirit and scope of the invention as defined by theappended claims.

I claim:

1. A golf playing aid comprising a disc of colored material, a tackyadhesive on one face of said disc for attaching the disc to the strikingface of a golf club, and a readily removable waxy layer on the face ofsaid disc opposed to said one face whereby when a golf ball is struck bythe disc in the course of swinging a golf club on which the disc ismounted a portion of said waxy layer will be removed thereby.

2. A golf playing aid comprising a disc of colored material, a tackyadhesive on one face of said disc for attaching the disc to the strikingface of a golf club, an aperture in said disc for aligning the latterwith the center of said club, and a readily removable waxy layer on theface of said disc opposed to said one face whereby when a golf ball isstruck by the disc in the course of swinging a golf club on which thedisc is mounted a portion of said waxy layer will be removed thereby.

3. A golf playing aid comprising a disc of colcred material, a tackyadhesive in one face of said disc for attaching the disc to the strikingface of a golf club, radial lines and concentric circles imprinted onsaid disc in opposed relationship to said one face for dividing the discinto areas, and a readily removable waxy layer on the face of said discopposed to said one face whereby when a golf ball is struck by the discin the course of swinging a golf club on which the disc is mounted aportion of said waxy layer will be removed thereby.

EUGENE F. GROSSMAN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 566,101 Sweny Aug. 18, 1896 1,464,029 Coughtrie Aug. '7, 19231,485,089 Musselman Feb. 26, 1924 2,030,135 Carpenter Feb. 11, 19362,495,679 Abrecht et al Jan. 31, 1950

